Except the most widespread definition is the other way around: 12am is midnight and 12pm is noon. As that source argues, 12:01 during the day is clearly after noon, so it must be pm.
In the end my point stands: You can argue both ways and it is confusing.
I think it would be weird going from 12am (ante meridiem = before noon) to 12:01pm (post meridiem = after noon), therefore 12pm must come right before 12:01pm, so 12pm is noon.
Except the most widespread definition is the other way around: 12am is midnight and 12pm is noon. As that source argues, 12:01 during the day is clearly after noon, so it must be pm.
In the end my point stands: You can argue both ways and it is confusing.
I think it would be weird going from 12am (ante meridiem = before noon) to 12:01pm (post meridiem = after noon), therefore 12pm must come right before 12:01pm, so 12pm is noon.